从0,1,2,3,4,5中任取3个数字,组成没有重复数字的三位数,其中能被5整除的三位数有?
问题描述:
从0,1,2,3,4,5中任取3个数字,组成没有重复数字的三位数,其中能被5整除的三位数有?
怎么思考的,用排列的方法做,急,
答
从大到小:105,120,125,130,135,140,145,150,205,210,215,230,235,240,245,250,305,310,315,320,325,340,345,350,405,410,415,420,425,430,435,440,450,510,520,530,540.